US9649796B2 - Method for producing a sensor, and sensor - Google Patents

Method for producing a sensor, and sensor Download PDF

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Publication number
US9649796B2
US9649796B2 US14/365,670 US201214365670A US9649796B2 US 9649796 B2 US9649796 B2 US 9649796B2 US 201214365670 A US201214365670 A US 201214365670A US 9649796 B2 US9649796 B2 US 9649796B2
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United States
Prior art keywords
molded part
sensor
electric contacts
around
molded
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Application number
US14/365,670
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English (en)
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US20140352461A1 (en
Inventor
Marc Panis
Matthias Viering
Lothar Biebricher
Robert Déléris
Leon Apers
Marie-Noelle Gris
Matyas Czeh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Continental Teves AG and Co OHG
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Continental Automotive GmbH
Continental Teves AG and Co OHG
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Publication of US20140352461A1 publication Critical patent/US20140352461A1/en
Assigned to CONTINENTAL AUTOMOTIVE GMBH, CONTINENTAL TEVES AG & CO. OHG reassignment CONTINENTAL AUTOMOTIVE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: APERS, LEON, GRIS, Marie-Noelle, PANIS, MARC, BIEBRICHER, LOTHAR, DELERIS, ROBERT, VIERING, MATTHIAS, CZEH, Matyas
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1671—Making multilayered or multicoloured articles with an insert
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B29C2045/14131—Positioning or centering articles in the mould using positioning or centering means forming part of the insert
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1671—Making multilayered or multicoloured articles with an insert
    • B29C2045/1673—Making multilayered or multicoloured articles with an insert injecting the first layer, then feeding the insert, then injecting the second layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14639—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0005—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0008—Magnetic or paramagnetic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof

Definitions

  • the present invention relates to a method for producing a sensor. It is additionally concerned with a sensor.
  • a plurality of sensors are known which are composed of the actual sensor element for measuring a measuring variable as well as corresponding devices for signal processing, signal evaluation and/or signal transmission. Sensors for measuring the angular position, velocity and speed of crank and cam shafts of vehicles may be named here as an example.
  • a plurality of manufacturing processes is used to produce these types of sensors, different manufacturing measures being produced as a result of the different designs and operating uses of the sensors. Consequently, as a rule, a specific special manufacturing process is used for each sensor.
  • An aspect of the invention is a method for producing a sensor, by way of which sensors are able to be produced for different operating uses in an extensively standardized manner.
  • pre-injection mold around a sensor element with IC to produce a pre-molded part (sub-module) which is realized such that, as a result of an interference fit, it is able to receive electric contacts for the sensor with different dimensions and/or in different positions;
  • the method according to an aspect of the invention is based on the basic concept of creating an extensively standardized pre-molded part which is suitable to receive different types of sensor elements and contacts and is consequently able to be developed in dependence on the respective operating use.
  • different types of sensor elements with IC can be used.
  • the electric contacts for the sensor are not injected at the same time into the pre-molded part, but are fastened thereon by means of interference fit, it is also possible to select the electric contacts with reference to the respective operating use and to fix them on the pre-molded part.
  • the pre-molded part as a standard part is able to be equipped with different types of sensor elements and/or electric contacts.
  • the connections of the IC of the sensor element are connected to the electric contacts which, as a result of interference fit, have been arranged in or on the pre-molded part, and the pre-molded part is then injection molded around to produce the finished sensor.
  • the pre-molded part in this case, is designed such that it is able to receive the electric contacts for the sensor over a certain dimension/position range, the contacts being pressed into recesses/indentations of the pre-molded part and consequently being fixed by means of an interference fit.
  • the electric contacts are preferably sheet metal parts which are punched and subsequently bent. They are preferably provided with a slight oversize such that during the entire manufacturing process they are able to be held in position by the resultant pressing, and also later when being injection molded around.
  • the fit between the electric contact and the pre-molded part (sub-module) is suitable for a wide range of material thicknesses, for example between 0.3 mm and 0.8 mm. Wide applicability is possible as a result.
  • the pre-molded part can be manufactured independently of the electric contacts. It is independent of the pin occupancy on the plug.
  • the press connection between the pre-molded part and the electric contact is suitable for a wide range of material thicknesses. No additional injection molding around is necessary to fix and position the contacts. Said contacts are held by the pre-molded part. There are fewer electric connections and consequently production expenditure is reduced. Susceptibility to faults is accordingly reduced.
  • the mold concept of the pre-molded part (sub-module) is not made more difficult by running contact strips through it.
  • the pre-molded part is injection molded around in the injection molding mold together with a fastening part.
  • this can be, for example, a flange which is suitable to receive a screw-type connection.
  • the sensor element with IC is pre-injection molded around together with a magnet in order to obtain a pre-molded part (sub-module) which includes the magnet.
  • the magnet is able to be incorporated into the pre-molded part without any problems as no contacts, contact strips etc. have been injected into said pre-molded part.
  • the pre-molded part is preferably realized such that, aside from the electric contacts, it is able to receive further electric/electronic components, such as, for example, an electric resistor. Said components are added once the electric contacts have been pressed into corresponding receiving means of the pre-molded part and, if necessary, are connected directly to the contacts, for example are welded to the contact for the voltage supply. As a result, the components are pre-positioned and are also protected when being injection molded around subsequently.
  • electric/electronic components such as, for example, an electric resistor.
  • the pre-molded part is realized in an expedient manner such that the assignment of the electric contacts is able to be changed. Sufficient space is provided in the pre-molded part in order to be able to carry out an assignment change of this type, in particular to cross over the electric contacts (so-called swap).
  • the respective pin assignment of the plug can consequently be adapted to the application. For example, it is possible to swap over the signal line and the earth line.
  • the pre-molded part is preferably provided with a removable positioning pin in order to enable positioning of the pre-molded part in the injection molding mold.
  • the positioning of the pre-molded part can be effected by means of the positioning pin on the one side and by means of the contact pins of the plug on the other side.
  • the positioning pin is then able to be removed in a final manufacturing step.
  • the sensor element with IC When pre-injection molding around the sensor element with IC to produce the pre-molded part, the sensor element with IC is preferably positioned perpendicularly with respect the axis of the pre-molded part. Once the electric contacts have been pressed into the pre-molded part, the connections of the IC are then bent around (by 90°) prior to connection to the electric contacts.
  • An aspect of the present invention additionally relates to a sensor including an injection-molded around pre-molded part which is produced as a result of pre-injection molding around a sensor element with IC and as a result of pressing electric contacts for the sensor into the pre-molded part.
  • a sensor of this type comprises an extensively standardized pre-molded part which is suitable to receive different types of sensor elements and electric contacts and can consequently be adapted individually to corresponding operating uses although the manufacturing process is extensively standardized.
  • FIGS. 1 a - d show individual steps for producing a first embodiment of a sensor
  • FIGS. 2 a - c shows individual steps for producing a second embodiment of a sensor.
  • FIG. 1 a on the left-hand side, shows a sensor element 1 with IC as well as corresponding line connections 2 , to which a capacitor 3 is assigned.
  • FIG. 1 a in the center, shows a hollow-cylindrical magnet 4 .
  • Both parts i.e. the sensor element 1 and the magnet 4 , are pre-injection molded around with a suitable plastics material such that the pre-molded part (sub-module) 5 shown on the right-hand side in FIG. 1 a is obtained.
  • the pre-molded part 5 in this case, is realized such that it comprises corresponding recesses/indentations 6 for receiving electrical contacts 7 for the sensor element or the sensor.
  • the sensor element 1 in this case, is injection molded around such that its connections 2 project perpendicularly upward from the pre-molded part 5 .
  • the magnet 4 is arranged in the interior of the pre-molded part 5 and cannot be seen.
  • the pre-molded part 5 is realized such that it comprises a removable positioning pin 8 which serves for positioning the pre-molded part 5 when it is injection molded around subsequently.
  • the next step is to press electric contacts 7 for the sensor into the recesses/indentations 6 of the pre-molded part 5 .
  • the recesses/indentations 6 are realized such that, by means of interference fit, they are able to receive differently sized electric contacts 7 or that electric contacts 7 are able to be arranged in different positions.
  • the electric contacts 7 can be arranged, for example, in a straight line or crossed over, as is shown in FIGS. 1 b and 1 c .
  • the electric contacts 7 are sheet metal parts which have been punched and subsequently bent. They are provided with a barb with a slight oversize such that it is possible to produce the corresponding interference fit in this manner. The important point is that said electric contacts 7 and not injected in, but are pressed in such that different types of contacts are able to be arranged in different positions on the pre-molded part 5 .
  • an electric resistor 11 is additionally inserted into a receiving means on the pre-molded part 5 and is welded directly with the electric contact for the voltage supply. An interruption between the two weld points is not produced until after the welding. As a result, the design allows for an embodiment both with and without resistor.
  • the pre-molded part (sub-module) 5 which is produced in this manner is then placed into an injection molding mold (not shown). Positioning is effected in this connection by means of the positioning pin 8 on the one side and the contact pins of the plug on the other side. Together with a fastening part 10 , the pre-molded part 5 is injection molded around with thermoplastic material such that the finished sensor which is shown in FIG. 1 d is obtained. As the final manufacturing step, the positioning pin 8 is removed, as is shown in the right-hand image of FIG. 1 d .
  • FIGS. 2 a -2 c only differ from that in Figs. 1 a -1 d essentially in that a differently realized magnet 23 is injection molded around and that the electric contacts 26 do not cross over.
  • a sensor element 1 with IC and corresponding connections 2 as well as a capacitor 3 are injection molded around together with a magnet 23 for a pre-molded part 24 which comprises a corresponding positioning pin 8 .
  • electric contacts 26 are pressed into corresponding recesses/indentations of the pre-molded part 24 , after which the connections 2 are bent around and welded with the electric contacts 26 .
  • the pre-molded part which is realized in this manner is placed into an injection molding mold and is injection-molded around for the production of the finished sensor.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Measuring Fluid Pressure (AREA)
US14/365,670 2011-12-17 2012-12-10 Method for producing a sensor, and sensor Active 2033-08-09 US9649796B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102011121412.0 2011-12-17
DE102011121412A DE102011121412A1 (de) 2011-12-17 2011-12-17 Verfahren zur Herstellung eines Sensors und Sensor
DE102011121412 2011-12-17
PCT/EP2012/075000 WO2013087587A1 (de) 2011-12-17 2012-12-10 Verfahren zur herstellung eines sensors und sensor

Publications (2)

Publication Number Publication Date
US20140352461A1 US20140352461A1 (en) 2014-12-04
US9649796B2 true US9649796B2 (en) 2017-05-16

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Country Status (8)

Country Link
US (1) US9649796B2 (pt)
EP (1) EP2790890B1 (pt)
JP (1) JP5970555B2 (pt)
KR (1) KR102064622B1 (pt)
CN (1) CN103998204B (pt)
DE (1) DE102011121412A1 (pt)
IN (1) IN2014CN04397A (pt)
WO (1) WO2013087587A1 (pt)

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US20170336749A1 (en) * 2016-05-20 2017-11-23 Kyocera Document Solutions Inc. Relay connector fitting structure, electronic appliance, and image forming apparatus
US10139254B2 (en) * 2015-08-18 2018-11-27 Continental Automotive France Method for manufacturing a measurement sensor for a motor vehicle
US10247585B2 (en) 2015-01-28 2019-04-02 Continental Teves Ag & Ohg Adapter with embedded filter components for sensors
US10451646B2 (en) 2015-01-28 2019-10-22 Continental Teves Ag & Co. Ohg Sensor with symmetrically embedded sensor elements
US10953578B2 (en) 2013-11-28 2021-03-23 Continental Teves Ag & Co. Ohg Sensor production by holding the intermediate injection-molded part
US11536594B2 (en) 2017-08-23 2022-12-27 Vitesco Technologies Germany Gmbh Sensor component, pre-assembly arrangement for a sensor component, and method for producing a sensor component

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DE102014216772B4 (de) 2014-08-22 2022-09-29 Zf Friedrichshafen Ag Anordnung zur lagegenauen Positionierung eines elektronischen Bauteileträgers
DE102016207664A1 (de) * 2016-05-03 2017-11-09 Continental Teves Ag & Co. Ohg Sensorelement für ein kraftfahrzeug
DE102016210550B4 (de) * 2016-06-14 2020-08-13 Robert Bosch Gmbh Sensorvorrichtung und Verfahren zur Herstellung einer Sensorvorrichtung
DE102016210519B4 (de) * 2016-06-14 2020-09-10 Robert Bosch Gmbh Sensoranordnung und Verfahren zur Herstellung einer Sensoranordnung
DE102017212971A1 (de) 2017-07-27 2019-01-31 Robert Bosch Gmbh Montageelement, Montagesatz, Verfahren zum Montieren und Bauteil
CN111347615A (zh) * 2018-12-21 2020-06-30 大陆-特韦斯股份有限公司 制造传感器的方法、定位销直接固定构件壳体
FR3097969B1 (fr) * 2019-06-25 2021-06-11 Continental Automotive Gmbh Capteur et procédé de fabrication
DE102019126763A1 (de) * 2019-10-04 2021-04-08 Schlaeger Kunststofftechnik Gmbh Verfahren zur Herstellung eines mit wenigstens einem Bauelement, insbesondere mit einem Funktionselement, versehenen Bauteils

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CN103998204B (zh) 2017-05-31
WO2013087587A1 (de) 2013-06-20
JP2015501743A (ja) 2015-01-19
KR102064622B1 (ko) 2020-01-08
KR20140105008A (ko) 2014-08-29
EP2790890B1 (de) 2017-03-15
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CN103998204A (zh) 2014-08-20
US20140352461A1 (en) 2014-12-04

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